Automatic gas-ignition device.



Patented lan. I4, |902.

P LEHMANN AUTOMATIC .GAS IGNITION DEVICE.

(Application led Sept. 5, 1901.)

Nn. 69I,280.

(Nov Modl.)

UNTED STATES PATENT FFICE.

PAUL LEHMANN, OF BERLIN, GERMANY.

AUTOMATIC GAS-IGNITION DEN/ICE.

SPECIFICATION forming part of Letters Patent No. 691,280, dated January1 4, 1902. Application filed September 5, 1901. Serial No. 74,574. (Nomodel.)

To all whom, t may concern.-

Be it known that I, PAUL LEHMANN, chemist and engineer, a subject of theEmperor of Germany, residing at Wilhelmstrasse Berlin, Germany, haveinvented new and useful Improvements in or Relating to AutomaticGas-Ignition Devices, of' which the following 'is a specification.

My invention relates vto automatic gas-ignition devices and isillustrated in the accompanying drawings, in Which- Figure l is avertical section through the upper part of a chimney provided with mynew ignition device. Fig. 2 is a top view of the same. Fig. 3 is a sideView of' the ignition device. Figs. 4 to 6 show a modification of myignition device. Figs. '7 to 9 show other modifications of the device.

It has been usually assumed up to the present time that on opening thetap of an incandescent-light burner provided with a chimney the space inthe latter is uniformly filled Awith an explosive mixture of gas andair. According to careful researches made by me this is, however,foundnot to be the case; but a com.- paratively small, narrow, andlimited space is found in the chimney in which the mixture of gas andair is of such a nature that a chemical lighting mass can be brought toa glowing state and the gas ignited. lVith a newlymounted evenly-formedincandescent mantle, with a vertical mantle-support, and normal burnerthe above-mentioned space will lie in the center of the chimney. Theseconditions are, however, seldom met with, and

. the shape of the incandescent body, the inclined position of thesupport, and differences in burners necessitate a considerable variationin the position and form of the explosivegas air-zone suitable forautomatic chemical lighters. Experiments have shown that very often morethan half the space inclosed by the chimney is quite without an eectivemixture of gas and air, so that an ignition-ball hanging in this part isnot even warmed and far less broughtV to a glowing state. These factsgive the reason why automatic gas-lighters provided even with goodlighting material so often do not answer their purpose. With the aid ofthe present apparatus the ignition ball or device can with greatfacility be brought into the proper zone, so as to make the ignitionabsolutely sure.

According to this invention upon the chimney is-placed a narrowcross-bar a, provided with numerous recesses arranged closely together.This cross-bar may be in the form of a corrugated or notched strip ofmetal or a notched or screw rod or the like, and it can be attached onthe upper margin ot the chimney by any suitable means. Upon this bar issuspended, by means of a hook or an eye l), a carrier B, in which the.ignition-ball d is hung. This carrier is provided with a handle c, bywhich it can easily be moved from one point to another along the bar. Bythis means the place can easily be found which is most suitable for theignition. Acirc'ular or other shaped guard-plate e may be secured to thebottom of the carrier B, beneath the ignition-ball d, to preventoverheating of it while the burner is alight. It remains quite black,

while the flame is alight, thus insuring a very' long durability andefficiency of the lighting device. At the same time the plate preventsthe falling down of platinum particles upon the mantle, where the same,in combination with thorium-oxid even in small quantities, would formlarge spots upon the mantle, which in burning would remain dark red,thereby aecting the intensity of the light.

The described arrangement can be also applied to a modified form ofmantle-support provided with prongs at the top, as shown in the modifiedfornuiFigs. 4 to 6. In this case the guard-plate c rests, by means oftwo holes, upon the two prongsf of the mantle-supporting pin g, and theignition-ball is supported above the plate, the cross-bar a beingconnected to the guard by a bend. In this case either theignition-device support hasa number of notches or the like for itsadjustment or the adjustability can be effected by providing thebaseplate with a number of holes,

s0 as to adjust it as desired upon the prongsf 95 IOO cross-bar so thatthe ignition-ball is in its proper position for ignition the cross-barmay be clamped bythe screw m. The head piece may be swungaround on a pinof the holder h and clamped thereon by a screw t'. In the modificationshown in Figs. S and 9 the crossbar is provided with holes m, by whichit may be brought upon a pin of the holder. In this case the bar afteradjustment may be fixed to the holder by a screw o.

I may mention that it is found very useful to inclose the carrier forthe ignition-ball by a wire-gauze cage, such as shown in Fig. 7 of thedrawings.

Having now particularly described and ascertained the nature oi my saidinvention and in which manner the same may be performed, I declare thatwhat I claim is- 1. In an automatic gas-ignition device, the combinationwith an ignition-ball; of acarrier comprising' a frame for holding saidball, a plate forming the bottom of said frame, and an eye forsupporting said frame, substantially as described.

2. In an automatic gas-ignition device, the combination with across-bar; of a carrier suspended from said bar, and adjustable thereon,and an ignition-ball in said carrier, substantially as described.

3. In an automatic gas-ignition device, the combination with across-bar; of a carrier having an eye adjustable on said bar, and anignition-ball in said carrier, substantially as described.

4. In an automatic gas-ignition device, the combination with across-bar; of a carrier adjustable on said bar, an ignition-ball in saidcarrier, and a handle on said carrier, substant-ially as described.

5. In an automatic gas-ignition device, the combination with a carriercomprising a frame, a plate forming the bottom of said frame and an eyefor supporting said frame, and an ignition-ball in said frame; of acrossbarpassing through said eye and supporting said carrier,substantially as described.

G. In an automatic gas-ignition device, the combination with across-bar; of an ignitionball, a carrier for the ignition-ballcomprising a frame for holding said ball and an eye supporting saidcarrier adjustably on said bar, and a plate below said carrier,substantially as described.

7. In an automatic gas-ignition device, the combination with across-bar; of an ignitionball, a carrier for the saidignition-ball,adjustable on said bar, and a plate below said carrier,substantially as described.

S. In an automatic gas-ignition device, the combination with a carriercomprising a frame and an eye, and an ignition-ball in said carrier; ofa cross-bar passing through said eye and having means for retaining saidcarrier inany desired position thereon,substantially as described.

9. In an automatic gas-ignition device, the combination with acarriercomprisingaframe and an eye, and an ignition-ball in saidcarrier; of a cross-bar passing through said eye and means for adjustingsaid bar, substantially as described.

10. In an automatic gas-ignition device, the combinationwithacarriercomprisingaframe and an eye, and an ignition-ball in saidcarrier; of a cross-bar passing through said eye, and means for holdingsaid baron the top of a lamp-chimney, substantially as described.

1l. In an automatic gas-ignition device, the combination with acarriercomprisinga frame and an eye, and an ignition-ball in saidcarrier; of a cross-bar passing through said eye, means for holding saidbar on the top of a lamp-chimney, and means for adjusting its positionin relation thereto, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PAUL LEHMANN.

Witnesses:

WILHELM DORME, LUDWIG WARENSEN.

